| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [verb] be [verb] to | 369 |
|
| 2 | [vb mod] [verb] be [v-ing] [prep] | 292 |
|
| 3 | [modal v] [verb] be [v-ing] to | 39 |
|
| 4 | [vb mod] [verb] [be] [v-ing] to | 39 |
|
